Air cleaner



FIG. 1 is a front elevation view of an air cleaner showing our new design;

FIG. 2 is a rear elevation view thereof;

FIG. 3 is a left side elevation view thereof;

FIG. 4 is a right side elevation view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is an enlarged sectional view thereof, taken on line 7--7 of FIG. 1, wherein internal means are omitted; and

FIG. 8 is an enlarged sectional view thereof, taken on line 8--8 of FIG. 1, wherein internal means are omitted. 

The ornamental design for an air cleaner, as shown. 